/* ============================================================
   风速体育 · 全站共享样式  /assets/site.css
   骨架：reset → 变量 → 排版 → 布局 → 组件 → 头部 → 页脚 → 媒体位 → 响应式
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 变量 ---------- */
:root{
  --bg:#0A0E14;
  --panel:#111823;
  --panel-deep:#0E141E;
  --blue:#1E90FF;
  --blue-soft:rgba(30,144,255,.08);
  --neon:#39FF14;
  --orange:#FF6B35;
  --cream:#EFE9DF;
  --rock:#9AA5B1;
  --moss:#4C6B4F;
  --clay:#B4643F;
  --glass:rgba(239,233,223,.08);
  --glass-strong:rgba(239,233,223,.16);
  --line:rgba(239,233,223,.14);
  --line-soft:rgba(239,233,223,.07);
  --ink-soft:#CBD3DB;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","DIN Alternate","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --shell:1240px;
  --gutter:clamp(18px,4.4vw,48px);
  --r-sm:3px;
  --r-md:6px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--bg);
  color:var(--cream);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
}
::selection{background:var(--blue);color:#04101F}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:2px}
#main-content{display:block;scroll-margin-top:140px}

.h-display{font-size:clamp(36px,7.2vw,84px);font-weight:300;line-height:1.04;letter-spacing:.01em}
.h-section{font-size:clamp(25px,3.5vw,42px);font-weight:300;line-height:1.16;letter-spacing:.01em}
.kicker{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  color:var(--rock);text-transform:uppercase;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--orange);flex:0 0 auto}
.lede{font-size:clamp(16px,1.5vw,19px);line-height:1.8;color:var(--ink-soft);max-width:62ch}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 4. 布局 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding:clamp(46px,6.8vw,96px) 0}
.section--tight{padding:clamp(26px,4vw,50px) 0}
.section__head{display:flex;flex-direction:column;gap:12px;margin-bottom:clamp(24px,3.4vw,44px);max-width:72ch}
.rule{height:1px;background:var(--line);border:0;margin:0}
.rule--stripe{
  height:3px;border:0;margin:0;
  background:linear-gradient(90deg,var(--blue) 0 34%,var(--neon) 34% 56%,var(--orange) 56% 70%,var(--clay) 70% 100%);
}
.grid{display:grid;gap:clamp(16px,2vw,26px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr)}
.grid--split-rev{grid-template-columns:minmax(0,.85fr) minmax(0,1.55fr)}

/* ---------- 5. 通用组件 ---------- */
.card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:clamp(18px,2.4vw,28px);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.card:hover{border-color:rgba(30,144,255,.45);transform:translateY(-3px)}
.card--glass{background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.card--accent{border-left:3px solid var(--orange)}
.card__index{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--rock)}
.card__title{font-size:clamp(19px,2vw,23px);font-weight:500;line-height:1.35}
.card__text{font-size:15px;line-height:1.78;color:var(--rock)}

.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{
  font-family:var(--font-mono);font-weight:700;line-height:.92;
  font-size:clamp(38px,6vw,76px);letter-spacing:-.03em;color:var(--cream);
}
.stat__value--neon{color:var(--neon)}
.stat__unit{font-size:.4em;font-weight:400;color:var(--rock);margin-left:6px;letter-spacing:0}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--rock);text-transform:uppercase}
.stat__note{font-size:14px;line-height:1.7;color:var(--rock);max-width:36ch}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.06em;
  border:1px solid transparent;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--primary{background:var(--blue);color:#04101F}
.btn--primary:hover{background:#4BA8FF}
.btn--line{border-color:var(--line);color:var(--cream);background:var(--glass)}
.btn--line:hover{border-color:var(--blue);color:var(--blue)}
.btn--signal{color:var(--neon);border-color:rgba(57,255,20,.4);background:rgba(57,255,20,.06)}
.btn--signal:hover{background:rgba(57,255,20,.14)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  border:1px solid var(--line);color:var(--rock);white-space:nowrap;
}
.tag--hot{color:var(--orange);border-color:rgba(255,107,53,.5);background:rgba(255,107,53,.1)}
.tag--live{color:var(--neon);border-color:rgba(57,255,20,.45);background:rgba(57,255,20,.08)}
.tag--info{color:var(--blue);border-color:rgba(30,144,255,.45);background:rgba(30,144,255,.08)}
.tag--ok{color:#A8DEAE;border-color:rgba(76,107,79,.8);background:rgba(76,107,79,.24)}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-top:22px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--rock);
}
.breadcrumbs a{transition:color .18s var(--ease)}
.breadcrumbs a:hover{color:var(--cream)}
.breadcrumbs__sep{color:var(--clay)}
.breadcrumbs [aria-current="page"]{color:var(--cream)}

.prose{max-width:70ch;font-size:17px;line-height:1.86;color:#D8DEE5}
.prose p+p{margin-top:1.05em}
.prose h2{font-size:clamp(22px,2.6vw,30px);font-weight:400;line-height:1.3;margin:1.7em 0 .6em}
.prose h3{font-size:19px;font-weight:600;margin:1.4em 0 .5em}
.prose ul{display:flex;flex-direction:column;gap:10px;margin:1em 0}
.prose li{position:relative;padding-left:20px;color:var(--ink-soft)}
.prose li::before{content:"";position:absolute;left:0;top:.75em;width:8px;height:2px;background:var(--blue)}
.prose a{color:var(--blue);border-bottom:1px solid rgba(30,144,255,.35)}
.prose strong{color:var(--cream);font-weight:600}

/* ---------- 6. 头部 · 刊头式报头 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,14,20,.9);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.site-header[data-scrolled]{box-shadow:0 20px 44px -34px rgba(0,0,0,.98);border-bottom-color:rgba(239,233,223,.22)}
.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:linear-gradient(90deg,var(--blue),var(--neon));
  transition:width .12s linear;
}
.skip-link{
  position:fixed;left:50%;top:-64px;transform:translateX(-50%);z-index:200;
  padding:10px 20px;background:var(--blue);color:#04101F;
  font-size:14px;font-weight:700;border-radius:0 0 var(--r-sm) var(--r-sm);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

.header-shell{width:100%;max-width:var(--shell);margin-inline:auto;padding:14px var(--gutter) 0}

.masthead{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px}
.masthead__index{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--rock);line-height:1.4;
}
.live-dot{
  width:6px;height:6px;border-radius:50%;background:var(--neon);flex:0 0 auto;
  box-shadow:0 0 0 4px rgba(57,255,20,.14);
  animation:wss-pulse 2.6s ease-in-out infinite;
}
@keyframes wss-pulse{0%,100%{opacity:1}50%{opacity:.42}}

.brand{display:flex;flex-direction:column;align-items:center;gap:6px;padding:2px 10px}
.brand__mark{
  font-size:clamp(24px,3.4vw,38px);font-weight:300;line-height:1;
  letter-spacing:.2em;padding-left:.2em;color:var(--cream);
  transition:color .18s var(--ease);
}
.brand__sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.34em;
  text-transform:uppercase;color:var(--rock);
}
.brand::after{
  content:"";display:block;width:46px;height:2px;margin-top:2px;
  background:linear-gradient(90deg,var(--blue),var(--neon) 62%,var(--orange));
  opacity:.9;
}
.brand:hover .brand__mark{color:#FFFFFF}
.brand:hover .brand__sub{color:var(--blue)}

.masthead__actions{display:flex;align-items:center;justify-content:flex-end;gap:10px}
.panel-toggle{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 12px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--glass);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--rock);
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.panel-toggle:hover{color:var(--cream);border-color:rgba(30,144,255,.6)}
.panel-toggle[aria-expanded="true"]{border-color:var(--blue);color:var(--cream);background:var(--blue-soft)}
.panel-toggle__value{color:var(--neon)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--panel);color:var(--cream);
  font-size:14px;font-weight:600;letter-spacing:.08em;
}
.nav-toggle:hover{border-color:var(--blue);color:var(--blue)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:2px;background:currentColor}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
  transition:transform .18s var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}

.site-nav{margin-top:10px}
.site-nav__list{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:2px}
.site-nav__link{
  position:relative;display:inline-block;padding:11px 16px;
  font-size:17px;font-weight:600;letter-spacing:.06em;color:var(--rock);
  transition:color .18s var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:5px;height:2px;
  background:var(--blue);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.site-nav__link:hover{color:var(--cream)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--blue)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.header-panel{padding-top:0}
.header-panel__grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  margin-top:14px;background:var(--line-soft);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
}
.header-panel__cell{display:flex;flex-direction:column;gap:5px;background:var(--panel);padding:14px 16px}
.header-panel__value{
  font-family:var(--font-mono);font-weight:700;font-size:26px;line-height:1;
  letter-spacing:-.02em;color:var(--neon);
}
.header-panel__value--orange{color:var(--orange)}
.header-panel__value--blue{color:var(--blue)}
.header-panel__unit{font-size:.5em;font-weight:400;color:var(--rock);margin-left:3px}
.header-panel__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--rock)}
.header-panel__foot{
  padding:12px 2px 14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--rock);
}
.header-panel__link{color:var(--blue);border-bottom:1px solid rgba(30,144,255,.4)}

/* ---------- 7. 页脚 ---------- */
.site-footer{margin-top:clamp(56px,8vw,110px);background:var(--panel);border-top:1px solid var(--line)}
.footer-stripe{display:flex;height:4px}
.footer-stripe span{display:block;height:100%}
.footer-stripe span:nth-child(1){flex:0 0 34%;background:var(--blue)}
.footer-stripe span:nth-child(2){flex:0 0 22%;background:var(--neon)}
.footer-stripe span:nth-child(3){flex:0 0 14%;background:var(--orange)}
.footer-stripe span:nth-child(4){flex:1 1 auto;background:var(--clay)}

.footer-shell{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:clamp(32px,4.6vw,58px) var(--gutter) clamp(22px,3vw,34px);
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr) minmax(0,1.15fr);
  gap:clamp(24px,3.4vw,50px);
}
.footer-brand__mark{
  display:inline-block;
  font-size:clamp(23px,2.8vw,32px);font-weight:300;letter-spacing:.2em;
  padding-left:.2em;color:var(--cream);transition:color .18s var(--ease);
}
.footer-brand__mark:hover{color:var(--blue)}
.footer-brand__note{margin-top:14px;font-size:15px;line-height:1.8;color:var(--rock);max-width:36ch}
.footer-note{margin-top:12px;font-size:13px;line-height:1.75;color:var(--rock);max-width:40ch}

.footer-col__title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--rock);
}
.footer-col__title::before{content:"";display:block;width:20px;height:2px;background:var(--clay);margin-bottom:12px}

.footer-list{margin-top:6px}
.footer-list li{display:flex;align-items:baseline;gap:12px;padding:9px 0;border-bottom:1px solid var(--line-soft)}
.footer-list__num{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--rock);flex:0 0 auto}
.footer-list__link{
  font-size:16px;font-weight:500;color:#D6DDE4;
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.footer-list__link:hover{color:var(--blue);padding-left:4px}

.footer-contact{margin-top:6px}
.footer-contact__row{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  padding:10px 0;border-bottom:1px solid var(--line-soft);
}
.footer-contact__label{
  flex:0 0 58px;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.18em;color:var(--rock);
}
.footer-contact__value{flex:1 1 auto;font-size:15px;color:var(--cream);word-break:break-all}
.copy-btn{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  padding:4px 9px;border:1px solid var(--line);border-radius:2px;color:var(--rock);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.copy-btn:hover{color:var(--neon);border-color:rgba(57,255,20,.5)}
.copy-btn[data-copied="true"]{color:var(--neon);border-color:var(--neon);background:rgba(57,255,20,.08)}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:clamp(28px,3.6vw,48px);padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--rock);
}
.footer-legal a{border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.footer-legal a:hover{color:var(--cream);border-bottom-color:var(--blue)}
.footer-legal__icp{font-family:var(--font-mono);font-size:12px}
.footer-copyright{margin-left:auto;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}

/* ---------- 8. 图片容器（供页面阶段放置占位） ---------- */
.media-frame{
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(142deg,#111823 0%,#0A0E14 72%);
  aspect-ratio:16/9;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  display:flex;justify-content:space-between;gap:14px;
  padding:14px 16px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--cream);
  background:linear-gradient(0deg,rgba(10,14,20,.94),rgba(10,14,20,0));
}
.media-frame__ghost{
  position:absolute;inset:0;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--rock);
}
.speedlines{
  position:absolute;inset:-10%;z-index:1;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(30,144,255,.16) 0 2px,transparent 2px 15px);
  mix-blend-mode:screen;opacity:.55;
}

/* ---------- 9. 显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .52s var(--ease),transform .52s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1100px){
  .footer-top{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:980px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split,.grid--split-rev{grid-template-columns:1fr}
  .header-panel__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .site-header{position:relative;top:auto}
  #main-content{scroll-margin-top:20px}
  .header-shell{padding-top:12px}
  .masthead{grid-template-columns:1fr;justify-items:center;gap:10px}
  .brand{order:1}
  .masthead__actions{order:2;justify-content:center;width:100%}
  .masthead__index{order:3;justify-content:center;text-align:center}
  .nav-toggle{display:inline-flex}
  .site-nav{display:none;margin-top:12px}
  .site-nav[data-open]{display:block;border-top:1px solid var(--line);padding-bottom:10px}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;margin-top:6px}
  .site-nav__link{display:block;padding:14px 4px;border-bottom:1px solid var(--line-soft);font-size:18px}
  .site-nav__link::after{left:4px;right:auto;width:30px;bottom:10px}
  .site-nav__link:hover{padding-left:4px}
  .header-panel__grid{margin-top:12px}
}
@media (max-width:640px){
  body{font-size:16px}
  .grid--2,.grid--3{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-copyright{margin-left:0}
  .header-panel__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .header-panel__value{font-size:22px}
}

/* ---------- 11. 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1;transform:none}
  .card:hover{transform:none}
}